How fiber optic works

True fiber optic material is composed of a core layer of material
that is impregnated with a fluorescing compound that reacts to
light, surrounded by a thin sheathing layer that has a different
index of refraction. Ultraviolet light enters through the sides
of the fiber and is trapped within the fiber because it cannot
reflect back out through the sheath because of the difference
in refractive indexes between the core and the sheath. The UV
light causes the material in the core to fluoresce and emit visible
light out the end of the tube. The longer the tube the more light
is captured and emitted out the end. Check out the Lightning Rod
fiber optic sight. It is the brightest you will see, because it
is longer and it uses true fiber optic material.

One benefit of the physics of the fiber optic is that on a cloudy
day you still have lots of UV light available to light up the
fiber.

Tips for a brighter dot

Keep the fiber as clean as possible but do not do anything
that deteriorates the sheath.

Be careful when you install replacement fiber that you keep
the sheath intact as much as possible.

Stay away from brake cleaner and gun scrubber etc. for cleaning
the fiber and when cleaning your gun.

Replace the fiber every once in a while when it gets too
dirty to clean, or when the sheath deteriorates.

Installation of fiber

1) Remove the broken fiber from the sight.
2) Insert replacement fiber from the muzzle end and leave approx. 1/16 inch sticking out (the more you leave sticking out the bigger the dot).
3) Melt the end with a cigarette lighter.
4) Hold the melted end tight against the sight and cut the end closest to the
muzzle, leaving 1/16 overhang..
5) Melt the muzzle end of the fiber while holding the fiber tightly against the sight.

It is important to make sure that the fiber is snug in the sight with no play back and forth. A loose fiber will break very quickly.

Replacement fibers are available in red, yellow, or green.

Please feel free to call if you have questions regarding the installation or use of this product